uxcell Plastic Square Blanking End Caps Tubing Tube Inserts 25mmx25mm 12 Pcs Product Mame : Square Tube Insert;Top Size : 25 x 25mm / 1&rdquo; x 1"(L*W) Thread Size : 24 x 24mm / 0.94" x 0.94"(L*W);Overall Height : 18mm / 0.71" Material : Plastic;Color : Black Net Weight : 40g Package Content : 12 x Square Tube Insert